/*
 * Copyright 2007 Rob Nielsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.proxymatic.core;

import com.googlecode.proxymatic.core.util.ReflectUtil;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Arrays;

public class MethodSpec implements Serializable {
    private final String name;
    private final Class[] parameterTypes;
    private final Class declaringClass;

    public MethodSpec(Method method) {
        this.name = method.getName();
        this.parameterTypes = method.getParameterTypes();
        this.declaringClass = method.getDeclaringClass();
    }

    public Method getMethod() {
        return ReflectUtil.getMethod(declaringClass, name, parameterTypes);
    }

    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        MethodSpec spec = (MethodSpec) o;
        if (!declaringClass.equals(spec.declaringClass)) {
            return false;
        }
        if (!name.equals(spec.name)) {
            return false;
        }
        if (!Arrays.equals(parameterTypes, spec.parameterTypes)) {
            return false;
        }
        return true;
    }

    public int hashCode() {
        int result;
        result = name.hashCode();
        result = 31 * result + Arrays.hashCode(parameterTypes);
        result = 31 * result + declaringClass.hashCode();
        return result;
    }

    public String toString() {
        return name + Arrays.asList(parameterTypes);
    }
}
